JP4445844B2 - Dust adhesion suppression and adhesion dust removal device on the inner wall of exhaust gas flow passage - Google Patents

Description

  The present invention relates to a dust treatment facility, a cement plant or the like, which is used to suppress dust adhesion to the inner wall surface of an exhaust gas flow passage used when dust is about to adhere to the inner wall surface of the flow passage of exhaust gas containing dust. It relates to a withdrawal device.

  In general, in a combustion facility having a combustion furnace as in a waste treatment facility or a cement plant, exhaust gas 2 generated in the combustion furnace 1 is passed through an exhaust gas duct 3 to a downstream dust collector 4 as schematically shown in FIG. After being guided and collected by the dust collector 4, it is sent to the chimney 5 or the like to be released into the atmosphere. At this time, when a bag filter is used as the dust collector 4, the temperature of the exhaust gas 2 needs to be lowered on the inlet side of the dust collector 4 because the processing temperature is limited. For this reason, the exhaust gas 2 having a high temperature (around 400 ° C.) introduced from the combustion furnace 1 is placed in the middle of the exhaust gas duct 3 upstream of the dust collector 4 at 180 ° C. suitable for dust collection in the dust collector 4. A gas cooling tower 6 for cooling to the extent is provided.

  Such a gas cooling tower 6 has an exhaust gas inlet portion for connecting an exhaust gas duct 3 for guiding the exhaust gas 2 from the combustion furnace 1 to the center of a cylindrical top formed of a refractory material, as schematically shown in FIG. 7, an exhaust gas outlet 8 is provided on one side of the lower end portion, an exhaust gas duct for guiding the exhaust gas 2 to the dust collector 4 is connected to the exhaust gas outlet 8, and further, an upper position is required in the circumferential direction. A plurality of spray nozzles 9 are provided in two upper and lower stages at intervals, and each spray nozzle 9 is connected to a cooling water supply unit via a cooling water line (not shown). While the exhaust gas 2 flows from the exhaust gas inlet 7 and flows to the exhaust gas outlet 8, the exhaust gas 2 is cooled by bringing the cooling water 10 sprayed from the spray nozzle 9 into contact with the exhaust gas 2, and the cooled exhaust gas. 2 , As well as to send the downstream side to the dust collector 4, the dust 14 in the exhaust gas 2 it is so as to fall turned into powder in contact with the cooling water 10.

  Further, a scraper 13 for scraping and discharging the dust 14 that has fallen and accumulated is installed at the center of the bottom surface of the gas cooling tower 6, and the scraper 13 is disposed at the center of the lower surface of the gas cooling tower 6. It is attached to the upper end portion of the rotating shaft 12 that is connected to the output shaft of the driving device 11 installed in and protruded to the inside. By rotating the rotating shaft 12, the scraper 13 rotates and accumulates on the bottom surface. The dust 14 is discharged from the dust discharge port 15 to the outside (see, for example, Patent Document 1). Reference numeral 16 denotes a rotary valve provided at the lower end of the dust discharge port 15.

  When the exhaust gas 2 discharged from the combustion furnace 1 is circulated through the gas flow passages such as the exhaust gas duct 3 and the gas cooling tower 6 located downstream, the dust 14 contained in the exhaust gas 2 is used as the gas. It adheres to the inner wall surface of the flow path. In particular, dust that has absorbed a part of the cooling water 10 when the exhaust gas 2 is cooled by the cooling water 10 sprayed from the spray nozzle 9 is formed on the inner wall surface near the spray nozzle 9 in the upper part of the gas cooling tower 6. There is a problem that the degree of adhesion 14 is high, and the dust 14 is deposited on the inner wall surface due to continued adhesion of dust 14.

That is, when the exhaust gas 2 containing the dust 14 flows into the gas cooling tower 6, a part of the cooling water 10 sprayed from the spray nozzle 9 at the upper position is absorbed by the dust 14, and the dust 14 has a salt content. Therefore, a large amount adheres to the inner wall surface of the gas cooling tower 6, particularly to the inner wall surface at the upper position where the spray nozzle 9 is located. If this is left untreated, the attached dust gradually grows, and a large amount of attached dust may be peeled off from the inner wall surface. If it falls, the scraper 13 on the inner bottom surface will be damaged or tripped. There is a risk of being forced to stop.

  In order to prevent such a risk, conventionally, the sticking dust is removed by manually moving the bar arranged on the inner wall surface manually from the outside of the gas cooling tower 6. In this case, although the effect of removing dust was obtained, the labor of the operator was great because of manual operation.

  For this purpose, the applicant of the present invention has proposed a gas cooling tower deposit removal device that automatically removes dust.

  As shown in FIG. 14, the gas cooling tower deposit removing apparatus has an appropriate interval from the inner wall surface in the gas cooling tower 6 provided with a scraper 13 for scraping dust that has fallen on the bottom board to the discharge port. A deposit removing member 18 formed in an annular shape along the circumferential direction of the inner wall surface and having a blade portion 17 formed on the lower surface on the outer edge side is provided so as to be movable up and down, and the deposit removing member 18 is suspended by a wire 19 inserted through the upper wall portion of the gas cooling tower 6, and the wire 19 is wound around a pulley 20 installed at the upper portion of the cooling tower. It has the structure connected to.

  Thus, when removing the deposits using the deposit removing device of the gas cooling tower, the driving device 21 is driven to feed out the wire 19, and the deposit removing member 18 is lowered by its own weight, and the gas cooling is performed. The deposits such as dust 14 adhering to the inner wall surface of the tower 6 are scraped by the blade portion 17 of the deposit removal member 18 so that the deposits can be automatically removed. (For example, refer to Patent Document 2).

  Further, as an apparatus for removing the deposits adhering to the inner wall of the exhaust gas duct through which the exhaust gas is circulated, the present applicant, as shown in FIG. 15, has a duct serving as an exhaust gas passage of the ash melting furnace, that is, a flue 22. The inner tube 24 is composed of an outer tube 23 and an inner tube 24 rotatably disposed in the outer tube. The inner tube 24 has a corrugated uneven portion 24a on the inner wall, and is rotatable with respect to the outer tube 23. The operating piece 25 protrudes from the outer wall of the inner tube 24 and is assembled with the knocker 26 and the stopper 27 facing each other with the operating piece 25 interposed therebetween. In another proposal, the inner wall adhering material is dropped by the circumferential impact force generated by rotating 24 (see, for example, Patent Document 3).

JP 2004-162989 A Japanese Utility Model Publication Sho 62-185335 JP 11-22951 A

  However, what is described in Patent Document 2 is designed to automatically remove deposits adhering to the inner wall surface of the gas cooling tower 6, but only by the weight of the deposit removal member 18. Since the kimono is scraped off, it is necessary to scrape off the deposit before it hardens and sticks to the inner wall surface of the gas cooling tower 6, but the deposit adheres to the inner wall surface. There is no function to suppress this, and as the deposits adhere to the inner wall surface, it is necessary to frequently move up and down. Further, the wire 19 having one end bonded to the deposit removing member 18 inside the gas cooling tower 6 is connected to a driving device 21 outside the gas cooling tower 6. Although it is necessary to prevent the exhaust gas 2 from leaking from the insertion portion of the wire 19 provided on the wall portion, the wire 19 is likely to swing laterally during the lifting operation, and therefore the insertion port of the wire 19 has a diameter of the wire 19. Therefore, it is necessary to have a device for sufficiently sealing the insertion portion of the wire 19.

  In addition, what is described in Patent Document 3 is useful for removing deposits adhering to the inner wall surface of the exhaust gas duct 3. It cannot be used for removal.

  Accordingly, the present invention suppresses dust from adhering to the inner wall surface of a gas flow passage such as an exhaust gas duct or a gas cooling tower, and allows the dust to be automatically removed before growing. It is what.

In order to solve the above problems, the present invention provides a required vertical direction length and a required orthogonal direction to the length direction so as to be arranged along the arc of the inner wall surface of the exhaust gas flow passage through which the exhaust gas containing dust flows . the Sudarejo member in an arc shape and in accordance with the arc of the inner wall surface has a width, a plurality located adjacent to the circumferential direction and along the inner wall surface of the exhaust gas flow passage, of the respective Sudarejo member each upper end, respectively by hanging supported by the drive device installed in an exhaust gas flow passage, so as to fall from raising the respective interdigital member by respective drive device, the exhaust gas flow passage where the interdigital member is positioned Inhibiting and adhering dust adhesion to the inner wall surface of an exhaust gas flow passage, characterized in that it has a structure that suppresses the adhesion of dust to the inner wall surface of the gas and discharges dust adhering to the inner wall surface of the exhaust gas flow passage Use a dust removal device.

Furthermore, each bowl-shaped member having the required vertical length and the required width in the above configuration and having an arc shape corresponding to the arc of the inner wall surface of the exhaust gas flow passage is arranged in parallel in the vertical direction at a required interval. and a plurality of chain that, or as consisted of an arcuate support member attached to both ends of the plurality several chains, thereby lowering the supporting hanging the support member in the longitudinal direction one end to a drive device, A plurality of rods each having a required length in the vertical direction and a required width, and each bowl-shaped member having an arc shape corresponding to the arc of the inner wall surface of the exhaust gas flow passage arranged in parallel in the vertical direction at a required interval and wood, or the like consisted of an arc-shaped support member that attach to both ends of the plurality several bars, thereby lowering supporting hanging the support member in the longitudinal direction one end to the drive unit, the required The inner wall of the exhaust gas flow passage having a vertical length and a required width of Of each interdigital member in an arc shape to fit the arc, and the network member having a predetermined length and width, and the support member arc shape attached to both ends in the longitudinal direction of the net-material, the width of the grid material consisted of a frame attached to both ends of the direction, or so as to lower the support suspending the support member of the longitudinal direction one end to the drive unit, and the exhaust gas has the required vertical length and a required width A plurality of elongate plate members or bars extending in the vertical direction, and a plurality of elongate plate members or bars extending in a direction perpendicular to the plate members or bar members, each of which is formed into an arc shape in accordance with the arc of the inner wall surface of the flow passage. It required a lattice-like structure of the length and width made of a wood, consisted of a support member of arcuate shape in the longitudinal direction of the both end portions attached to the grid-like structure to an arcuate lattice-like structure The support member at one end in the longitudinal direction is used as the drive device. A configuration which is adapted to drop carriage.

According to the dust adhesion suppressing / attaching dust removing device to the inner wall surface of the exhaust gas flow passage of the present invention, the following excellent effects are exhibited.
It has a required vertical length and a required width perpendicular to the length direction so as to be arranged along the arc of the inner wall surface of the exhaust gas flow passage through which the exhaust gas containing dust flows, and matches the arc of the inner wall surface. the Sudarejo member in an arc shape Te, a plurality located adjacent to the circumferential direction and along the inner wall surface of the exhaust gas flow passage, each upper end portion of said each Sudarejo member, was placed in an exhaust gas flow passage driving The apparatus is suspended and supported by the respective devices, and the respective saddle-like members are raised and dropped by the respective driving devices , and the adhesion of dust to the inner wall surface of the exhaust gas flow passage where the saddle-like members are located and the Since the dust adhering to the inner wall surface of the exhaust gas flow passage is removed, the dust adhering to the inner wall surfaces of the gas cooling tower and exhaust gas duct as the exhaust gas flow passage Can be suppressed with In addition, by raising the bowl-shaped member and dropping it abruptly, not only can the dust attached to the inner wall surface of the exhaust gas flow path be removed, but also the dust attached to the bowl-shaped member can be shaken off. it can.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 (a) (b) to FIG. 3 show an embodiment of the present invention, and as an exhaust gas flow passage, the adhesion of dust that tends to adhere to the inner wall surface of a gas cooling tower is suppressed, and the gas It shows the case where it applies as what dusts which adhered to the inner wall surface of a cooling tower are removed.

  Similar to the gas cooling tower shown in FIG. 13, the exhaust gas inlet portion 7 is provided at the top and the exhaust gas outlet 8 is provided at the lower portion so that the scraper 13 is rotationally driven by the driving device 11 at the bottom portion. Further, in the gas cooling tower 6 in which the spray nozzles 9 are provided at a plurality of locations in the circumferential direction at the upper position, the dust 14 in the exhaust gas 2 is placed in the gas cooling tower 6 at the upper position in the gas cooling tower 6. The saddle-shaped member 28 for suppressing the adhesion to the inner wall surface of the gas generator 6 and for removing dust adhering to the inner wall surface is formed into an arc shape in accordance with the arc of the inner wall surface of the gas cooling tower 6. A plurality (four in the embodiment) are arranged adjacent to each other in the direction, and each hook-like member 28 is suspended and supported so as to be lifted and lowered by the driving device 36.

More specifically, each interdigital member 28 of Figure 2 as shown in (a), (shows a case of ten in the drawing) a plurality of which is arranged parallel to at required intervals aligned with the required length a chain 29, and two support members 30 and 31 of the required length which is formed into an arc shape to match the curved surface along the circumferential direction of the inner wall surface of the gas cooling tower 6, connected to a predetermined position in the longitudinal direction of each chain 29 And connecting members 32 for restraining the chains 29 at a constant interval. Both ends of the chains 29 arranged in parallel are attached to the support members 30 and 31, respectively. It has a bowl shape with a width. Each of the support members 30 and 31 has a configuration in which reinforcing members 34 having a U-shaped cross-section are symmetrically attached to both surfaces of a support plate 33 having a required width deformed into an arc shape. The total weight of the members 30, 31, each chain 29, and the connecting member 32 is, for example, about 200 kg to 300 kg. For each of the chains 29 and the support members 30 and 31, SS material or SUS material is selected according to the atmospheric temperature in the gas cooling tower 6.

  The support member on the one end side (support member 30 in the case of FIG. 2 (a)) has a hanging rope-like object such as a chain or a wire rope (in the case of FIG. 2 (a), the case of the chain is shown) 35 Is attached, and the chain-type hook-shaped member 28 is suspended through the suspension cable-like object 35.

  As shown in FIGS. 1A and 1B, a plurality (four in the case of the present embodiment) of the bowl-shaped members 28 having such a configuration are arranged along the inner wall surface at the upper position of the gas cooling tower 6. The saddle-like members 28 are suspended and supported by the driving devices 36 that are arranged adjacent to each other in the circumferential direction and installed at four locations in the circumferential direction outside the top wall 6a of the gas cooling tower 6 via the suspension cords 35. The drive device 36 causes the saddle member 28 to be lifted and lowered so as to drop at once, and the support member 31 located on the lower end side of each saddle member 28 is provided in the middle of the gas cooling tower 6. A fall-preventing rope 37 attached in a state of being kept airtight is attached to the side wall of the position.

  The gap between each bowl-shaped member 28 suspended and supported by each driving device 36 and the inner wall surface of the gas cooling tower 6 is, for example, about 30 mm to 50 mm, and each bowl-shaped member 28 is raised by the driving device 36. The dust adhering to the surface of the chain 29 and the like is shaken off by the impact when it is dropped at once, and in the front-rear direction when it is lowered (the direction approaching and separating from the inner wall surface of the gas cooling tower 6). The dust attached to the inner wall surface of the gas cooling tower 6 can be removed by swinging.

As shown in FIG. 3 in an enlarged manner, each of the drive devices 36 has a fluid pressure cylinder such as a pneumatic or hydraulic cylinder installed on a support frame 36a installed on the outside of the top wall 6a of the gas cooling tower 6. The piston rod 38 of the fluid pressure cylinder as the drive device 36 protrudes downward, while the rod insertion hole 39 provided in the top wall 6a of the gas cooling tower 6 penetrates inward and outward, for example, A rod 40 having a round bar shape is inserted, and the upper end of the rod 40 and the lower end of the piston rod 38 that are projected to the outside of the top wall 6a of the gas cooling tower 6 are pivotally connected to each other. A suspension rope 35 attached to the support member 30 of the rod-like member 28 is connected to the lower end of the rod 40 located inside the top wall 6 a of the gas cooling tower 6. 38 is expanded and contracted, and the rod-shaped member 28 is moved up and down via the rod 40 and the suspended rope-like object 35.

  Further, in order to seal the gap between the rod 40 and the rod insertion hole 39 when the rod 40 is raised and lowered, the case 41 is fixed in an airtight state at the outer opening of the rod insertion hole 39, and the case 41 and the rod 40 are fixed. The seal member 42 is provided between the two.

  As the driving device 36, the rod 40 can be moved up and down using an electric motor other than the fluid pressure cylinder shown in FIG.

  The suspension rope 35 and each chain 29 can be attached to the support member 30 by locking the end of the suspension rope 35 and the end of each chain 29. It is preferable not to come off easily in consideration of the impact when pulling 28 up and down. For example, as shown in FIG. A connecting fitting that is provided with two connecting fitting insertion holes 43 corresponding to the two ends of the object 35 and a plurality of connecting fitting insertion holes 44 corresponding to the plurality of chains 29, respectively, and passed through the connecting fitting insertion hole 43. 45, the end of the suspension cable 35 is connected and attached, and the end of the chain 29 is connected and attached to the connection fitting 45 that is passed through the connection fitting insertion hole 44.

  The attachment of each chain 29 to the support member 31 on the lower end side of each flange-like member 28 and the attachment of the drop-preventing rope-like object 37 are also performed using the above-described connecting fitting 45.

  As the connecting metal fitting 45, any other type, for example, a hook type, can be used as long as it can be reliably locked.

  In addition, the connection of the connecting member 32 to each chain 29 in each chain-type hook-shaped member 28 may be performed by connecting the chains 29 using the connecting member 32 as a wire to keep the interval constant. 4 (a) (b) and FIG. 4 (c) (d) may be employed as a connection method. That is, the one shown in FIGS. 4 (a) and 4 (b) uses a band-like connecting member 32a bent and deformed in an arc shape in accordance with the arc shape of the support members 30 and 31 as a set of two sheets. Therefore, each connecting member 32 a is provided with a bolt insertion hole 46 at a position corresponding to the interval between the chains 29, so that each chain 29 is simultaneously sandwiched in the front-rear direction, and the connecting member 32 a is connected with the bolt 47 and the nut 48. The chain 29 is connected. 4 (c) and 4 (d) similarly, a bar 49 bent and deformed in an arc shape in accordance with the arc shape of the support members 30 and 31 is passed through a predetermined position of each chain 29, if necessary. The bar 49 and the chain 29 are welded or secured.

  When the exhaust gas 2 containing dust is caused to flow from the exhaust gas inlet portion 7 at the top of the gas cooling tower 6, the exhaust gas 2 is circulated from the exhaust gas inlet portion 7 toward the exhaust gas outlet 8 at the lower end portion. The cooling water 10 is sprayed from the spray nozzle 9 provided at the upper position of the gas cooling tower 6, and the exhaust gas 2 is cooled by contact with the cooling water 10. As a result, dust in the exhaust gas 2 is powdered and dropped in the gas cooling tower 6. However, dust scattered in the exhaust gas 2 tends to adhere to the upper position of the gas cooling tower 6 where the spray nozzle 9 is located. Then, it comes to adhere to the inner wall surface of the gas cooling tower 6.

  In the present invention, the saddle-like member 28 using the chain 29 is suspended from four places in the circumferential direction on the front side of the inner wall surface at the upper position of the gas cooling tower 6 where dust in the exhaust gas 2 is likely to adhere. Therefore, the dust in the exhaust gas 2 that has flowed in from the exhaust gas inlet portion 7 in the central portion of the top portion moves toward the inner wall surface of the gas cooling tower 6. Dust that adheres to the support members 30, 31, the connecting member 32, etc., but cannot adhere to the bowl-shaped member 28 adheres to the inner wall surface of the gas cooling tower 6 on the rear side of the bowl-shaped member 28. Become.

  During operation of the gas cooling tower 6 for cooling the exhaust gas 2, the drive device 36 is driven at a rate of once every few minutes, for example, once every 2 to 3 minutes, and the bowl-shaped members 28 are raised. The elevator is moved up and down at once. Each saddle-shaped member 28 individually drives each driving device 36 so as to be raised and lowered individually. At this time, since the drop-preventing rope 37 attached to the support member 31 on the lower end side of each hook-shaped member 28 has a sufficient length, each drive device 36 uses each hook-shaped member 28. Can be raised to an upper position (for example, about 700 mm), and each hook-like member 28 can be dropped at a stroke from the raised position to the stroke end of the fluid pressure cylinder as the driving device 36. The hook-shaped member 28 receives an impact when dropped.

  Due to the impact of the saddle-shaped member 28 when it is dropped, the dust adhering to the surface of the saddle-shaped member 28, that is, the surfaces of the chain 29, the support members 30 and 31, and the connecting member 32 is released and shaken off.

  On the other hand, the dust adhering to the inner wall surface of the gas cooling tower 6 is caused by the movement in which the bowl-shaped member 28 is rapidly moved down along the inner wall surface of the gas cooling tower 6. It is scraped off on each back side of the connecting member 32.

  As described above, since the bowl-shaped member 28 is suspended from the front surface of the inner wall surface of the gas cooling tower 6 and the bowl-shaped member 28 is moved in the vertical direction, the inner wall surface of the gas cooling tower 6 is arranged. It is possible to suppress or prevent the dust from adhering to the wall, the dust from adhering to the bowl-shaped member 28, and the dust adhering to the wall surface of the gas cooling tower from being removed by the bowl-shaped member 28. Dust adhering to the wall surface can be scraped off before it grows large.

  In the above operation, even if the suspended rope 35 of each hook-like member 28 is detached from the rod 40 on the drive device 36 side due to corrosion or the like, the support member 31 on the lower end side of each hook-like member 28 is Since it is connected to the middle position of the gas cooling tower 6 via the fall-preventing rope 37, the bowl-like member 28 is supported by the fall-prevention rope 37 in an inverted state, It does not fall to the bottom of the gas cooling tower 6. At this time, since the fall-preventing rope 37 is fixed at a sufficiently high position of the gas cooling tower 6, even if the bowl-like member 28 falls in the inverted state as described above, The member 28 does not hit the scraper 13 at the bottom, and the scraper 13 is not damaged.

  Next, FIGS. 5 (a), (b), and FIG. 6 show other embodiments in which the hook-shaped member 28 using the chain 29 is used. An uneven portion is formed on the side surface so as to scrape dust adhering to the inner wall surface of the gas cooling tower more effectively.

  That is, in the embodiment shown in FIGS. 5A and 5B, the scraping plate 50 is attached to the outside of the connecting member 32a shown in FIGS. When the shaped member 28 descends along the inner wall surface of the gas cooling tower 6, the adhering dust can be scraped off more positively. The same components as those in FIGS. 4A and 4B are denoted by the same reference numerals.

  According to this embodiment, the dust adhering to the inner wall surface of the gas cooling tower 6 can be scraped off by the movement of the bowl-shaped member 28, and the amount of dust adhering to the inner wall surface of the gas cooling tower can be reduced. Thus, it is possible to reliably suppress the growth of the attached dust.

  Further, in the embodiment shown in FIG. 6, the chain member 29a at an appropriate position in the longitudinal direction of each chain 29 forming the hook-shaped member 28 is made larger than the chain member 29b in the other part so as to extend in the front-rear direction. It is designed to protrude.

  According to this embodiment, since the unevenness is formed on the chain 29 itself using the chain members 29a and 29b which are different in size, scraping of the dust adhering to the inner wall surface of the gas cooling tower 6 is simplified. Will be able to do it.

  7 (a), 7 (b), and 7 (c) show another embodiment of the present invention. The plurality of chains 29 shown in FIG. 2 (a), the upper and lower support members 30 and 31, Instead of the hook-like member 28 comprising the connecting members 32 for connecting the respective chains 29, a bar 51 made of a plurality of round bars having a required length, and two supports attached to both ends of each bar 51 This is a hook-like member 28a comprising members 30, 31 and a connecting member 52 for connecting each bar 51, and the other configurations are the same as those shown in FIG. Are denoted by the same reference numerals.

  The attachment of both ends of each bar 51 to the two support members 30 and 31 of the bowl-shaped member 28a in this embodiment is as shown in the case of the support member 30 as an example in FIGS. The end of the bar 51 is connected and attached to the connecting metal fitting 45 attached to the support plate 33 of the support members 30 and 31. Further, as the connecting member 52, for example, a wire is used, and the connecting member 52 by the wire is wound around each bar 51, or as shown in the drawing, the bar 51 is penetrated laterally. It connects through the made horizontal hole 53. FIG.

  According to this embodiment, since the bowl-shaped member 28a has a configuration in which round bars are arranged at the required intervals as the bar 51, the upper position of the gas cooling tower 6 as shown in FIGS. By arranging and suspending along the inner wall surface in the circumferential direction, each bowl-shaped member 28a can be lifted and lowered during the operation of cooling the exhaust gas, as in the case of the chain-type bowl-shaped member 28 described above. By repeatedly raising and lowering the bowl-shaped member 28a at a cycle of once every few minutes, dust adheres to each bowl-shaped member 28a to suppress the adhesion of dust to the inner wall surface of the gas cooling tower, and the gas cooling tower The dust adhering to the inner wall surface can be scraped off when the bowl-shaped member 28 descends, and can be scraped off before the dust adhering to the inner wall surface of the gas cooling tower grows greatly.

  Further, FIGS. 8, 9 and 10 all show another embodiment of the bowl-shaped member 28. FIG. 8 shows two support members 30 and 31, two frames 54 and 55, and the support. This is a hook-like member 28b comprising a net member 56 incorporated between the members 30, 31 and the frames 54, 55.

  FIG. 9 shows a lattice structure in which a plurality of linear bars or plates 57 having a required length and a plurality of arc-shaped bars or plates 57a having a required length are assembled vertically and horizontally at appropriate intervals. The both ends of the lattice-like structure 58 in the longitudinal direction are attached to the support members 30 and 31 to form a flange-like member 28c.

  FIG. 10 shows a structure in which a plurality of (in the figure, three) plate members 59 cut into strips are connected by a chain 60 in the longitudinal direction and arranged in parallel at a predetermined interval. Are attached to the supporting members 30 and 31, and the chain 60 adjacent in the lateral direction is connected by a connecting member 32 to form a flange-shaped member 28d.

  By using the hook-shaped members 28b, 28c, and 28d shown in FIGS. 8 to 10 as shown in FIGS. 1A and 1B, it is possible to obtain the same effects as those in the above-described embodiment. .

  In the above-described embodiment, the apparatus of the present invention is arranged along the inner wall surface of the upper position where dust of the gas cooling tower 6 easily adheres to suppress the adhesion of dust to the inner wall surface of the gas cooling tower 6. In addition, the case where dust adhered to the inner wall surface of the gas cooling tower is removed before growing has been described, but the apparatus of the present invention can be used in the middle of the duct 3 through which the exhaust gas 2 flows.

  FIG. 11 shows an example thereof. For example, any one of the above-mentioned saddle-shaped members 28, 28 a, 28 b, 28 c, 28 d is attached to a portion where dust in the exhaust gas 2 flowing through the duct 3 is relatively easily attached. It is arranged alongside so as to cover the wall surface to which the dust adheres, and the suspension rope 35 is connected to and supported by the drive device 36, and the cage member 28 (or via the suspension rope 35 is driven by the drive device 36. 28b, 28c, and 28d) are moved to prevent dust from adhering to the wall surface of the duct 3 and to allow dust adhering to the wall surface to be removed.

  In FIG. 11, the rod-shaped member 28 is moved in the duct 3 in the flow direction of the exhaust gas 2, but may be moved in a lateral direction perpendicular to the flow direction of the exhaust gas 2. Is possible.

  According to this embodiment, it is possible to remove dust adhering to the inner wall surface of the duct 3, thereby causing a trouble in advance that dust adheres to the duct 3 and narrows the flow path to increase pressure loss. Can be prevented.

  Note that the present invention is not limited to the above embodiment. For example, the exhaust gas 2 has been described as being discharged from the combustion furnace, but the exhaust gas discharged from the ash melting furnace is used as the downstream dust collecting device. Of course, it can also be applied to the case where it is discharged from the chimney through the device to the atmosphere, and it can be applied not only to the downstream equipment of the combustion furnace and melting furnace but also to various equipment accompanying fly ash in the exhaust gas. It is something that can be done.

  It is also possible to form uneven portions by attaching a scraping plate to the outer surface of each bowl-shaped member shown in FIGS. 7 (a), (b), (c), FIG. 8, FIG. 9, and FIG. Of course, various modifications can be made without departing from the scope of the present invention.

The state which has arrange | positioned the apparatus of this invention along the inner wall face of a gas cooling tower is shown, (A) is a general | schematic cutting side view, (B) is a cutting | disconnection top view of (A). An example of the hook-shaped member in the apparatus of this invention is shown, (b) is a front view, (b) is an enlarged view showing the mounting state of the support member, the suspended rope-like object, and the chain from the direction A of (b). FIG. It is an expanded sectional view of the B section of FIG. FIG. 2B shows an example of a connecting method of a connecting member and a chain shown in FIG. 2A. FIG. 2A is a partial rear view, FIG. 2B is a cross-sectional view taken along a line CC in FIG. 2A, and FIG. The front view of the other example of a system, (D) is DD sectional drawing of (C). As another embodiment of the present invention, an example in which a scraping plate is attached to the outer side surface of the bowl-shaped member is shown. (A) is a partial rear view, (B) is EE of (A). It is sectional drawing. FIG. 9 is a side view showing a state in which a part of the chain of the bowl-shaped member shown in FIG. 2 (a) is enlarged to have a scraping function as another embodiment of the present invention. The other example of the bowl-shaped member used with the apparatus of this invention is shown, (A) is a front view, (B) is an enlarged front view which shows the attachment state of a bar and a supporting member, (C) is (B) FIG. It is a front view which shows another example of a bowl-shaped member. It is a front view which shows another example of a bowl-shaped member. It is a front view which shows another example of a bowl-shaped member. It is a schematic sectional drawing which shows an example of the state which has arrange | positioned the apparatus of this invention to the inner wall face of a duct. It is a schematic diagram of the combustion equipment provided with the conventional combustion furnace. It is a cutting | disconnection side view which shows the outline of an example of the gas cooling tower shown in FIG. It is a cutting | disconnection side view which shows the outline | summary of the apparatus made to remove the dust adhering to the inner wall of the conventional gas cooling tower. It is a cutaway view of what was made to remove the deposit | attachment to the conventional inner wall surface of a duct.

Explanation of symbols

2 exhaust gas 3 duct 6 gas cooling tower 28, 28 a, 28 b, 28 c, 28 d ridge member 29 chain 30 support member 31 support member 35 suspended rope 36 drive device 50 scraping plate (uneven portion)
51 Bar material 56 Net material 57, 57a Bar material or plate material 58 Grid structure

Claims (5)

It has a required vertical length and a required width perpendicular to the length direction so as to be arranged along the arc of the inner wall surface of the exhaust gas flow passage through which the exhaust gas containing dust flows, and matches the arc of the inner wall surface. the Sudarejo member in an arc shape Te, a plurality located adjacent to the circumferential direction and along the inner wall surface of the exhaust gas flow passage, each upper end portion of said each Sudarejo member, was placed in an exhaust gas flow passage driving The apparatus is suspended and supported by the respective devices, and the respective saddle-like members are raised and dropped by the respective driving devices , and the adhesion of dust to the inner wall surface of the exhaust gas flow passage where the saddle-like members are located and the An apparatus for suppressing dust adhesion and adhering dust to the inner wall surface of an exhaust gas flow passage, characterized in that the dust attached to the inner wall surface of the exhaust gas flow passage is removed. A plurality of chains , each having a required vertical length and required width, and arc- shaped members that are arc-shaped in accordance with the arc of the inner wall surface of the exhaust gas flow passage , arranged in parallel in the vertical direction at the required intervals If, consisted of a support member of arc shape attached to both ends of the plurality several chains, the exhaust gas according to claim 1, wherein the support member in the longitudinal direction one end and so as to lower the support suspended in the drive unit A device to suppress and adhere dust to the inner wall of the flow passage. A plurality of rods each having a required length in the vertical direction and a required width, and each bowl-shaped member having an arc shape corresponding to the arc of the inner wall surface of the exhaust gas flow passage arranged in parallel in the vertical direction at a required interval and wood, the claims consisted of an arc-shaped support member that attach to both ends of the plurality several bars, and so as to lower the support suspending the support member in the longitudinal direction one end to a drive device The apparatus for suppressing and adhering dust to the inner wall surface of the exhaust gas flow passage according to claim 1 . Each saddle-shaped member having a required vertical length and a required width and having an arc shape in accordance with the arc of the inner wall surface of the exhaust gas flow passage , a mesh material having the required length and width , and the mesh material and a support member of arc shape attached to both ends in the longitudinal direction, shall consist of a frame attached to the both ends in the width direction of the network material, lowering supporting hanging the support member of the longitudinal direction one end to a drive device The apparatus for suppressing dust adhesion and for removing dust adhered to the inner wall surface of the exhaust gas flow passage according to claim 1 . A plurality of elongate plate members or bar members extending in the vertical direction, each of the bowl-shaped members having a required vertical length and width and having an arc shape in accordance with the arc of the inner wall surface of the exhaust gas flow passage, and the plate material Alternatively, a lattice structure having a required length and width made of a plurality of elongated plates or bars extending in a direction perpendicular to the bar, and a lattice structure attached to both ends in the longitudinal direction of the lattice structure the consisted of a support member of a circular arc shape in a circular arc shape, dust suppressing adhesion in the longitudinal direction of the exhaust gas flow passage wall surface according to claim 1, wherein the supporting member at one end and so as to lower the support suspended in the drive unit Dust wiping device for cum adhesion.

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